Well that sounds good MWG, but first I would tell him facts about how bad the finances are and what does he think he could do about getting a job as his benefits won't last forever. Then say the rest of what you have to say because right now I don't think your H has any regard as to what or how his children are feeling or thinking. They do not figure on his ME radar.Neither do you at this moment in time, he treats you with such distain then throws in the odd ily and kisses.
He feels so entitled to do all the things you mention because he gives you his money. Might be best not to mention "all he knows is a father who cheats on his mother with an adulteress." cos he knows that,or just leave out the adultress bit. imo
I hope you get the courage to have this talk even if he doesn't respond you will feel so much better, your BP must be sky high. Take care.